Human cooperation is highly unusual. We live in large groups composed mostly of non-relatives. Evolutionists have proposed a number of explanations for this pattern, including cultural group selection and extensions of more general processes such as reciprocity, kin selection, and multi-level selection acting on genes. Evolutionary processes are consilient; they affect several different empirical domains, such as patterns of behavior and the proximal drivers of that behavior. In this target article, we sketch the evidence from five domains that bear on the explanatory adequacy of cultural group selection and competing hypotheses to explain human cooperation. Does cultural transmission constitute an inheritance system that can evolve in a Darwinian fashion? Are the norms that underpin institutions among the cultural traits so transmitted? Do we observe sufficient variation at the level of groups of considerable size for group selection to be a plausible process? Do human groups compete, and do success and failure in competition depend upon cultural variation? Do we observe adaptations for cooperation in humans that most plausibly arose by cultural group selection? If the answer to one of these questions is “no,” then we must look to other hypotheses. We present evidence, including quantitative evidence, that the answer to all of the questions is “yes” and argue that we must take the cultural group selection hypothesis seriously. If culturally transmitted systems of rules (institutions) that limit individual deviance organize cooperation in human societies, then it is not clear that any extant alternative to cultural group selection can be a complete explanation.

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Cultural group selection plays an essential role in explaining human cooperation: A sketch of the evidence

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Cultural group selection plays an essential role in explaining human cooperation: A sketch of the evidence

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Fukuyama, F. (2011) The origins of political order: From prehuman times to the French Revolution. Farrar, Straus and Giroux.

Gambetta, D. (1993) The Sicilian Mafia: The business of private protection. Harvard University Press.

Gardner, T. M. (2003) In the trenches at the talent wars: An examination of competitive interaction for human resources in the software industry. CAHRS Working Paper Series. Cornell University, School of Industrial and Labor Relations.

Kline, M. A. (2015) How to learn about teaching: An evolutionary framework for the study of teaching in humans and other animals. Behavioral and Brain Sciences38:e31. Available at: dx.doi.org/10.1017/S0140525X14000090

Stark, R. (1997) The rise of Christianity: How the obscure, marginal Jesus movement became the dominant religious force in the western world in a few centuries. HarperCollins.

Steffens, N. K., Haslam, S. A. & Reicher, S. D. (2014) Up close and personal: Evidence that shared social identity is a basis for the “special” relationship that binds followers to leaders. The Leadership Quarterly25(2):296–13. Available at: http://dx.doi.org/10.1016/j.leaqua.2013.08.008